Fashioning himself a modern-day Celtic warrior, 1970's Irish mobster Danny Greene clashed with the Cleveland mafia, resulting in a bombing war that would eventually destroy them both.

As leader of Murder, Inc., Albert Anastasia was one of the most vicious and feared mob bosses of the twentieth century.

Tommy Pitera became one of the most violent men of all time in the 1980's; betrayal brought the mob killer to justice.

During the 1970s, Anthony "Gaspipe" Casso rose through the ranks of the New York Mafia to become underboss of the Lucchese family, raking in millions of dollars through elaborate scams and killing anyone who got in his way.

After New York's Bonanno mob family was nearly destroyed by an undercover FBI agent, Joseph "Big Joey" Massino brought them back to prominence and became the only major Mafia boss left on the streets...the "Last Don."